Journal of Vibration and Sound

Journal of Vibration and Sound

Experimental analysis of the effect of temperature increase on the amount of sound transmitted from the screw compressor shell in air conditioning systems

Document Type : research article

Authors
Maisam Parhikhteh 1
Mahdi Karimi 2
Reza Ahmadi 3
Omid Mohammadpour 4
1 Department of Mechanical Engineering, Bu-Ali Sina University, Hamedan, Iran
2 Department of Mechanical Engineering, Bu-Ali Sina University, Hamedan, Iran.
3 Department of Mechanical Engineering. Payame Noor University (PNU), Tehran, Iran
4 Department of Mechanical Engineering. Payame Noor University (PNU), Tehran, Iran.
Abstract
Air conditioning systems are used in industries and residential environments with the aim of improving environmental conditions and creating a comfortable temperature for users. Considering the production of sound and vibration in most of its components, the lack of control of the production sound level always exposes the users to unwanted sound, which in addition to hearing complications, also causes fatigue and dissatisfaction with the environmental conditions. . Compressors are one of the most important sources of sound production in air conditioning systems, and screw compressors are one of the most widely used in air conditioning industries. Therefore, the compressor shell should be designed to minimize the transmission of sound from inside to outside. Since the maximum working temperature of compressors is up to 80 degrees Celsius, therefore, in this research, an acoustic test was performed on a sample of a screw compressor shell in two modes of ambient temperature and maximum working temperature inside the acoustic room, and the effect of temperature increase on the sound pressure level. transferred from the shell to the external environment is discussed. Finally, based on the frequency analysis performed in two conditions of ambient temperature and maximum working temperature and comparing the amount of sound transmitted to the environment at different frequencies, practical solutions to reduce the amount of transmitted sound pressure have been presented.
Keywords
Effect of temperature on sound transmission
frequency analysis
screw compressor
air conditioning systems
Subjects
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Journal of Vibration and Sound
Volume 13, Issue 25 - Serial Number 25
September 2024
Pages 82-92